拧紧力矩和热应力对螺纹插装阀的影响分析
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摘要
在分析螺纹插装阀整体结构和工作原理的基础上,建立螺纹插装阀阀套与阀芯间隙变化量在拧紧力矩和热应力作用下的理论计算模型,通过理论计算分析其间隙的变化规律,同时结合有限元分析结果对计算模型进行初步验证。结果表明:该计算模型可以用于分析螺纹插装阀在热应力下的使用性能,对螺纹插装阀的设计使用具有一定的指导意义。
Based on the analysis of the structure and the working principle of the threaded cartridge valve, a theoretical calculation model for the clearance variation between the sleeve and the spool under the effect of tightening torque and thermal stress was built. The clearance changing rules were analyzed by theoretical calculation, and the calculation model was validated combining with the finite element analysis results. The calculation model can be used to analyze the performance of the threaded cartridge valve under heat stress, and it has a certain guiding significance for designing and using of threaded cartridge valve.
Based on the analysis of the structure and the working principle of the threaded cartridge valve, a theoretical calculation model for the clearance variation between the sleeve and the spool under the effect of tightening torque and thermal stress was built. The clearance changing rules were analyzed by theoretical calculation, and the calculation model was validated combining with the finite element analysis results. The calculation model can be used to analyze the performance of the threaded cartridge valve under heat stress, and it has a certain guiding significance for designing and using of threaded cartridge valve.
引文
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[2] 梁允奇.机械制造中的传热与热变形基础[M].北京:机械工业出版社,1982.
[3] 胡鹏浩.非均匀温度场中机械零部件热变形的理论及应用研究[D].合肥:合肥工业大学,2001.
[4] 张勇.温度变化对机械零件配合精度影响的研究[D].合肥:合肥工业大学,2002.
[5] 罗哉.精密机械中孔轴最佳热配合理论及应用研究[D].合肥:合肥工业大学,2005.
[6] 马泳涛,陈五一.基于有限元法的圆筒零件热变形研究[J].矿山机械,2006(7):35-36.
[7] 肖其新.高低温对电液伺服阀性能影响[J].机械工程师,2008(10):21-23.XIAO Q X.Analysis of the High and Low Temperature Impact to the Electro-hydraulic Servo Valve[J].Mechanical Engineer,2008(10):21-23.
[8] 陶海华.工作状态下孔型零件热变形量预测计算[J].现代制造工程,2008(3):88-90.TAO H H.Computational Prediction for Thermal Deformation of Hollow Piece under Operating Condition[J].Modern Manufacturing Engineering,2008(3):88-90.